diff options
| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 09:34:54 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-04 11:29:03 +0300 |
| commit | 0aeea21ada517b99a6e95298ffc105381bcd3a52 (patch) | |
| tree | 5a09b35a770e6893d3f146053463a64ddce6488b /net/ipv6/exthdrs.c | |
| parent | 25f4535a94c2b38d09912d7e8bab371c9e97be38 (diff) | |
| download | linux-0aeea21ada517b99a6e95298ffc105381bcd3a52.tar.xz | |
net, ipv6: convert ipv6_txoptions.refcnt from atomic_t to refcount_t
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/exthdrs.c')
| -rw-r--r-- | net/ipv6/exthdrs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index 0460af226011..4996d734f1d2 100644 --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -971,7 +971,7 @@ ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt) *((char **)&opt2->dst1opt) += dif; if (opt2->srcrt) *((char **)&opt2->srcrt) += dif; - atomic_set(&opt2->refcnt, 1); + refcount_set(&opt2->refcnt, 1); } return opt2; } @@ -1056,7 +1056,7 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt, return ERR_PTR(-ENOBUFS); memset(opt2, 0, tot_len); - atomic_set(&opt2->refcnt, 1); + refcount_set(&opt2->refcnt, 1); opt2->tot_len = tot_len; p = (char *)(opt2 + 1); |